Propulsion system: SCHOTTEL NAV
Survey vessel Visurgis
In order to safeguard shipping on German waterways, the water and shipping authorities (WSA) operate survey vessels for extensive echo sounding measurements. Thus, potential dangers for shipping are detected and cleared away. For instance the vessels investigate the condition of the river bed. In case of lacking depths dredging will be arranged.
WSA Minden operates the survey vessel Visurgis since 2010 on the federal waterways of the river Weser, the Elbe side canal and Mittellandkanal driven by a SCHOTTEL NAV 110 at 182 kW input power.
Meanwhile, for the eastern part of Germany a newbuild is on the way for the operation on the river Elbe to the city of Lauenburg and the Berlin waterways Havel and Spree. Again the SCHOTTEL NAV was selected as propulsion system. Gerrit Claußen of the machinery department middle area at the Water and Shipping authority Minden gives reasons for the decision: ”We are entirely satisfied with the vessel Visurgis” She moves phantastically you can even say she floats softly“. However, considering the changed operation area, the new vessel will be a little bit different. Due to the bridges in Berlin, the vessel will be flatter and can even be lowered with ballast, if need be. In addition, the rudderpropeller can be adjusted to the draft. Moreover the new vessel will be a little bit longer and more powerful with the SCHOTTEL NAV 170 at 279 kW in order to work well in the stronger currents of the river Elbe.
The SCHOTTEL NAV is a self contained propulsion package consisting of an engine and a SCHOTTEL Rudderpropeller. This compact propulsion unit provides excellent thrust and manoeuvrability. The NAV can be installed on virtually any watercraft. Maintenance is made easy thanks to access through hinged doors in the canopy. The Rudderpropeller is equipped with a swing out and depth adjustment facility and can thus be moved out of the water.